1
Alan Broadwin, Charles Vassallo, Joseph N Logan, Robert W Hornlein: Method and apparatus for providing enhanced tissue fragmentation and/or hemostasis. Cavitron, Vorys Sater Seymour & Pease, June 5, 1990: US04931047 (721 worldwide citation)

An apparatus having a vibratable tip for ultrasonically disintegrating tissue in a surgical procedure and for aspirating the disintegrated tissue and fluids away from the surgical site through an opening in the tip. A connection to an electrosurgical unit provides for delivery of RF cutting current, ...


2
Alan Broadwin, Alexander Kreizman, Chana Puiam, Vaclav O Podany, Leonard M Emery: Method and apparatus for ultrasonic surgical fragmentation and removal of tissue. Cooper LaserSonics, Vorys Sater Seymour and Pease, May 9, 1989: US04827911 (558 worldwide citation)

A method and apparatus for periodically interrupting ultrasonic power applied to a ultrasonically vibrating tip to control its amplitude between high and low or zero amplitudes with a selectible duty cycle and repetition rate provides enhanced fragmentation and improves surgical control. The duty cy ...


3
Alan Broadwin, Joseph N Logan, Peter J Kuhl: Apparatus for providing enhanced tissue fragmentation and/or hemostasis. Valleylab, Peter C Richardson, Lawrence C Akers, Mark Dryer, May 14, 1991: US05015227 (455 worldwide citation)

An improved device for delivering RF current to the operating tool of an ultrasonic surgical apparatus which comprises a switch module for selecting said RF current, an electrically conducting metal band connected to the switch module and an electrically conductive O-ring in electrical contact with ...


4
Michael D Olichney, Michael S Klicek, Emery S Rose, Alan Broadwin, Alexander S Kreizman: Ultrasonic surgical handpiece and an energy initiator. Valleylab, Peter C Richardson, Lawrence C Akers, Aaron Passman, June 6, 1995: US05421829 (314 worldwide citation)

An ultrasonic oscillator drives a tool at a set frequency. An amplitude control runs the oscillator to set the vibration level. A frequency regulator joins the amplitude and the oscillator. A control feedback loop, in the frequency regulator, keeps handpiece linear dynamics. An operational transcond ...


5
Alexander Kreizman, Alan Broadwin: Angulated ultrasonic surgical handpieces and method for their production. Cooper LaserSonics, Vorys Sater Seymour and Pease, January 6, 1987: US04634419 (226 worldwide citation)

An improved ultrasonic surgical handpiece includes an angled connecting body between the transducer and operative tip, with the connecting body being bent at a location between the node and antinode at its respective ends and with a second nodal plane support in the transducer section. The vibrating ...


6
Robert W Hornlein, Joseph N Logan, Alan Broadwin, Vaclav O Podany: Irrigation/aspiration manifold and fittings for ultrasonic surgical aspiration system. Cooper LaserSonics, Vorys Sater Seymour and Pease, May 31, 1988: US04747820 (220 worldwide citation)

An ultrasonic surgical aspirator having an improved irrigation/aspiration manifold and components to facilitate quick connections of the irrigation and aspiration lines to a handpiece. In combination with a handle assembly having an ultrasonic vibrator for vibrating an ultrasonic tip and a nosecone, ...


7
David G Wuchinich, Alan Broadwin, Robert P Andersen: Ultrasonic aspirator. Cavitron Corporation, Robert M Skolnik, William R Evans, September 23, 1980: US04223676 (214 worldwide citation)

Apparatus for the surgical removal of tissue is disclosed comprising a handpiece having a resonant vibrator with a magnetostrictive stack and connecting body encompassing a hollow elongated tool which is ultrasonically vibrated at its tip longitudinally to a peak to peak stroke of at least 0.005 inc ...


8
Robert W Hornlein, Joseph N Logan, Alan Broadwin, Vaclav O Podany: Ultrasonic surgical system with aspiration tubulation connector. Valleylab, Vorys Sater Seymour & Pease, January 29, 1991: US04988334 (212 worldwide citation)

An ultrasonic surgical aspirator having an improved irrigation/aspiration manifold and components to facilitate quick connections of the irrigation and aspiration lines to a handpiece. In combination with a handle assembly having an ultrasonic vibrator for vibrating an ultrasonic tip and a nosecone, ...


9
Alan Broadwin, Leonard M Emery: Magnetostrictive transducer. Valleylab, Peter C Richardson, Lawrence C Akers, Mark Dryer, January 22, 1991: US04986808 (175 worldwide citation)

A magnetostrictive transducer comprising a plurality of elongated strips of magnetostrictive material, each strip having a proximal end, a distal end and a substantially V-shaped cross section wherein each arm of the V is formed by a longitudinal length of the strip, each strip being attached to an ...


10
William P Simon, Alan Broadwin, John Massa: Power-limit control for ultrasonic surgical instrument. Sonics & Materials, St Onge Steward Johnston & Reens, October 19, 1999: US05968007 (138 worldwide citation)

A control for an ultrasonic surgical instrument is described wherein a transducer having an elongate tip is vibrated to perform surgery. The amplitude of the vibrations by the tip are controlled and the power delivered to the tip can be set so that the operator of the instrument can in effect render ...